Buy a flamethrower with 3 emeralds from the item shop. This flamethrow allows the player to throw fire in a range of 4-5 blocks. The flame also applies fire on the enemies that gives makes them brittle and give 30 more damage and 20% armor penteration. This can be upgrade along with the range, damage and brittle damage by using embers that drop on kill from britteled enemies.(enimes have to have the fire effect upon them to get embers). You also dont lose embers upon death, embers can also be gained through assists. Embers can only be attained from the same player every 30 seconds. Depending on what you wanna upgrade it can cost around 22(if you go max range),24(if you go max damage) and 26(if you go max brittle damage). Range, damage, and brittle all have unique maxium upgrades since you can only get one max upgrade. Range final upgrade costs 4 embers and gives the ability to burn flammable blocks like wool and wood. Max damage gives an extra armor peneteration of 50%. Lastly, brittle gives the ability to ppush back enemies when they are being burnt.
Pyro users should typically max out brittle till level to get max brittle damage and should also get tier 2 range to reach the oponent from afar. Max brittle damage makes it easy to pvp and shred openents early and late game. Late game you should go for the pushback upgrade to minimize damage taken.